SEARCH FOR HEAVY PARTICLES OF POSITIVE SINGLE CHARGE IN HYDROGEN AND DEUTERIUM
在氢和氘中寻找正的单电荷重粒子

A search for heavy particles of positive single charge in hydrogen and deuterium samples has been carried out, with an electromagnetic separator, by measuring the charge mass ratio of the particles. The impurity background was rejected by the absorption methed. A specially designed proportional counter with very thin windows was used to detect and measure the energy of the particles. The mass region studied was 65-220 Mp (Mp is the mass of the proton). Results show that in natural water the upper limits of concentration for heavy particles of positive single charge with masses of 65-148 Mp and 148-220 Mp are less than 2×10-17 particles/H atom and 5×10-17 particles /H atom respectively.